diff --git a/spec/factories/papers.rb b/spec/factories/papers.rb
index 0c3239e..43051de 100644
--- a/spec/factories/papers.rb
+++ b/spec/factories/papers.rb
@@ -2,15 +2,15 @@ require_relative '../factory_helper'
 
 FactoryGirl.define do
   factory :paper do
-    name         { Faker::Lorem.sentence }
-    url          { Faker::Internet.url("ris.example.org") }
+    name                 { Faker::Lorem.sentence }
+    sequence(:url)       { |n| Faker::Internet.url("ris.example.org", "/paper-#{n}.html") }
     sequence(:reference) { |n| FactoryHelper.reference(n) }
-    body         "leipzig"
-    published_at "2015-07-20 21:16:53"
-    scraped_at   "2015-07-20 21:16:53"
-    paper_type   { FactoryHelper.paper_type }
-    originator   { Faker::Name.name }
-    resolution   { Faker::Lorem.paragraph(3) }
-    content      "-------------------------------\n\n "  # oh well...
+    body                 "leipzig"
+    published_at         "2015-07-20 21:16:53"
+    scraped_at           "2015-07-20 21:16:53"
+    paper_type           { FactoryHelper.paper_type }
+    originator           { Faker::Name.name }
+    resolution           { Faker::Lorem.paragraph(3) }
+    content              "-------------------------------\n\n "  # oh well...
   end
 end